Can I put furniture in front of a return air vent?

• <div><p>If possible, avoid placing furniture in front of a return air vent. A blocked air vent can cause your HVAC system to use more energy, which in turn can lower the life span of your unit and raise your energy bill. Furniture can also trap hot or cold air, damaging your furniture or appliances. </p><p><a href="https://www.angi.com/nearme/duct-installers/">Professional duct installers </a>suggest leaving between <b>six and 12 inches</b> of space in front of an air return vent. If you must place furniture in front of a return air vent, try to aim for putting furniture over a floor vent instead of in front of a wall vent, and avoid draping curtains over any vent system. </p></div>

Get matched with top air duct cleaners in Unionville, MO

Q: Is it bad to have mold in your air conditioner?

• <div><p>Mold in your air conditioner isn't a good thing, as it can be harmful to your health. If the mold travels through the ductwork or is blown out of the A/C, you and your family can inhale mold spores and develop respiratory illnesses and other problems. Preventing mold from growing in the air conditioner will help protect your health.</p></div>

Q: Is it mold or dust in my air vent?

• <div><p>You normally won&rsquo;t see any dust or mold actively floating out of your vent, but you might notice your vent looks dirty. Mold will cling to the sides and collect almost like black soot. Dust will look, well, dusty, but there will usually be a heavy buildup so expect thick gray layers on the bottom and sometimes the sides of the vent. <b>If you suspect you have mold in your vents, call a professional immediately. </b></p></div>

Q: Will a dehumidifier stop condensation on ductwork?

• <div><p>A dehumidifier can reduce condensation on your ductwork by lowering humidity levels in the air. Condensation occurs when humid, warm air makes contact with cold ducts. A dehumidifier can help maintain your home's indoor humidity below or around 50%, minimizing moisture buildup. However, if condensation is caused by leaks, cracks, or other damage, a dehumidifier won&rsquo;t solve the problem. </p></div>

Q: How can you tell if an AC vent is open or closed?

• <div><p>There are a few ways to determine if a vent is open or closed. You can inspect the vent and examine the position of the fins. If there are spaces between them, the vent is open. If the fins are flat and touching, the vent is closed. You can also stand under the vent when the system is running to see if you feel air flowing through it.</p></div>

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Verified Reviews for Air Duct Cleaning pros in Unionville, MO

*The Angi rating for Air Duct Cleaning companies in Unionville, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Duct Cleaning needs.

*The HomeAdvisor rating for Air Duct Cleaning companies in Unionville, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Duct Cleaning needs.

Last update on December 10, 2025

Reviewed in April 2022
From the moment I talked to Brian on a weekend call, to the time he and Rusty came to the house giving me the information, they were a true team. They gave me the the comfort I needed to get the right water cleaning system for my home. Yes I am a single women with my 90 year old mother and yes...
Trionics Superior Water
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Reviewed in February 2022
Very conscientious of our time. Great communication! Cleaned up everything!
Leafs Out Gutter Protection
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Reviewed in November 2021
My bathroom was old and ugly! Michael’s bath did an amazing job and my bathtub and shower is so beautiful and I am so happy!!!! The quality of the product is amazing and the customer service was a breath of fresh air! Michael and Mark thank you so much for a job well done!!! I would recommend...
Michael's Baths & Showers LLC
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Reviewed in July 2014
They came in and explained exactly what they were going to do and got right to work. The job was originally supposed to take 2 days but they stayed a little later with permission to finish in one. They cleaned up after and tried not to disrupt anything or anywhere they didn't need to.
Unerstall Foundations, Inc
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Reviewed in December 2013
I called Mr. Rooter because I had called another Plumbing company to come out the night before and they were a no show. They were extremely friendly over the phone. I called at approx 8AM and said they'd be able to come out by 11AM. They called at about 9:30 to say someone was available to...
Mr. Rooter Plumbing of St. Charles
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Reviewed in August 2012
They were quick, clean, and they gave us a discount because we are an Angie's list member. They also were in and out very quickly. I had no issues with them, and I would recommend them.
Bob's Plumbing Co
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Find Air duct cleaners in Unionville

Environmental Testing & Research Laboratories, Inc

4.85(

347

)

Environmental Testing & Research Laboratories, Inc

4.85(

347

)

Customers say: True professional

Recommended by 93% of Angi customers

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

"as advertised"

Nancy C on July 2018

Ductz of West St Louis

4.84(

)

Ductz of West St Louis

4.84(

)

Customers say: Super punctual

Recommended by 94% of Angi customers

We adhere to the National Air Duct Cleaners Association (NADCA) Standards as well as the Environmental Protection Agency (EPA) standards and EPA checklist. My DUCTZ company provides customers with Air Duct Cleaning, HVAC System Cleaning, Dryer Vent Cleaning, and Restoration services in the West St. Louis, Missouri area. Additional phones - (314) 584-0228 Additional email - [email protected]. Additional DBA - DUCTZ International Inc & Ductz Indoor Air Professionals.

"very good, professional, reliable, good quality work, fair price."

bob s on May 2018

"very good, professional, reliable, good quality work, fair price."

bob s on May 2018

Peters Heating & Air Conditioning

4.56(

)

Peters Heating & Air Conditioning

4.56(

)

Customers say: Super punctual

Recommended by 91% of Angi customers

Peters Heating and Air Conditioning is a Family owned business. It was opened in 1955 by Ralph and Charlie Peters. Our number one goal at Peters is to satisfy the customer and we have been doing so for over 57 years. We take pride in our high quality craftsmanship and customer satisfaction. Additional phone - (888) 491-4816. We service the areas around: Quincy IL, Hamilton IL, Pittsfield IL, Hannibal MO, Kirksville MO, Columbia MO, Troy MO, St Charles MO, O'fallon MO, St Peters MO, Wentzville MO, and Jefferson City, MO. Check out one of 7 locations; Hamilton, IL - 1975 Keokuk St, Hamilton, IL 62341; (217) 847-2777. Pittsfield, IL - 1401 W Washington, Pittsfield, IL 62363; (217) 285-1600. Columbia, MO - 3801 Waco Rd, Columbia, MO 65202; (573) 443-3660. Hannibal, MO - 4560 Paris Gravel Rd, Hannibal, MO 63401; (573) 221-0093. Kirksville, MO - 1515 S Baltimore, Kirksville, MO 63501; (660) 665-5665. Greater St Louis - 377 Travis Boulevard,Troy, MO 63379. Phone: (636) 462-5161, Fax: (636) 528-9552.

"Log the time they come in and leave: they will overcharge you a LOT!!! They may also have to come (like for me) three times before they advise you to replace the unit. But they will still charge you for everything pointless that they did before then. First visit: Added R22 and left. It didn’t work ($377.50) Second and third visits: Replaced capacitor and left. It didn’t work. Came back and condemned the unit as unfixable. ($185). This is Peter’s in Columbia, MO."

Gui D on September 2024

"Log the time they come in and leave: they will overcharge you a LOT!!! They may also have to come (like for me) three times before they advise you to replace the unit. But they will still charge you for everything pointless that they did before then. First visit: Added R22 and left. It didn’t work ($377.50) Second and third visits: Replaced capacitor and left. It didn’t work. Came back and condemned the unit as unfixable. ($185). This is Peter’s in Columbia, MO."

Gui D on September 2024

Peters Heating & Air Conditioning

5.00(

)

Peters Heating & Air Conditioning

5.00(

)

Customers say: Quick response

Recommended by 100% of Angi customers

We are your one stop shop for heating and cooling services, plus fireplaces and seamless gutters! from new heating system installation to air conditioning repair, we do it all with friendly service and affordable prices. No job is too big or small for us, and we would love the opportunity to serve you.

Showing 1-10 of 25

Air Duct Cleaning questions, answered by experts

Mold in your air conditioner isn't a good thing, as it can be harmful to your health. If the mold travels through the ductwork or is blown out of the A/C, you and your family can inhale mold spores and develop respiratory illnesses and other problems. Preventing mold from growing in the air conditioner will help protect your health.

If possible, avoid placing furniture in front of a return air vent. A blocked air vent can cause your HVAC system to use more energy, which in turn can lower the life span of your unit and raise your energy bill. Furniture can also trap hot or cold air, damaging your furniture or appliances.

Professional duct installers suggest leaving between six and 12 inches of space in front of an air return vent. If you must place furniture in front of a return air vent, try to aim for putting furniture over a floor vent instead of in front of a wall vent, and avoid draping curtains over any vent system.

You normally won’t see any dust or mold actively floating out of your vent, but you might notice your vent looks dirty. Mold will cling to the sides and collect almost like black soot. Dust will look, well, dusty, but there will usually be a heavy buildup so expect thick gray layers on the bottom and sometimes the sides of the vent. If you suspect you have mold in your vents, call a professional immediately.

A dehumidifier can reduce condensation on your ductwork by lowering humidity levels in the air. Condensation occurs when humid, warm air makes contact with cold ducts. A dehumidifier can help maintain your home's indoor humidity below or around 50%, minimizing moisture buildup. However, if condensation is caused by leaks, cracks, or other damage, a dehumidifier won’t solve the problem.

There are a few ways to determine if a vent is open or closed. You can inspect the vent and examine the position of the fins. If there are spaces between them, the vent is open. If the fins are flat and touching, the vent is closed. You can also stand under the vent when the system is running to see if you feel air flowing through it.

The Unionville, MO homeowners’ guide to air duct cleaning services

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